2D magnetostatics - ANSYS

[mistrfigu]

Hi ,
i would like to ask about 2D magnetostatics in ANSYS. I know better for this is MAXWELL but i havent licence. I made some APDL script but i have big problem. I want to do it 2D example with coil. But flux lines flow in very strange direction. I think porblem is in conection mesh but i dont know how to connect.

Thank you very much for some advise.

Here is my APDL program:

/NOPR
KEYW,PR_SET,1
KEYW,PR_STRUC,0
KEYW,PR_THERM,0
KEYW,PR_FLUID,0
KEYW,PR_ELMAG,1
KEYW,MAGNOD,1
KEYW,MAGEDG,0
KEYW,MAGHFE,0
KEYW,MAGELC,0
KEYW,PR_MULTI,0
KEYW,PR_CFD,0
/GO
!*
/COM,
/COM,Preferences for GUI filtering have been set to display:
/COM, Magnetic-Nodal
!*

! +++++++ Výběr materiálu

/PREP7
RECTNG,10,37,8.5,0 ! hřidel X1,X2,Y1,Y2
RECTNG,13,16,9.1,38.5 ! břit levý
RECTNG,31,34,9.1,38.5 ! břit pravý
RECTNG,16,31,9.5,14 !hlinikový nakružek
RECTNG,16,31,14,28 !civka
RECTNG,16,31,38.5,35 !ukonceni obvodu část vrchni
RECTNG,19,28,35,30 !ukonceni obvodu část spodní
RECTNG,10,37,9.1,8.5 ! zjemneovani mesche
RECTNG,0,45,0,45 !vnejsek

FLST,2,1,5,ORDE,1
FITEM,2,9
FLST,3,8,5,ORDE,2
FITEM,3,1
FITEM,3,-8
ASBA,P51X,P51X, , ,KEEP

AADD,2,6,3,7

! +++++++ Výběr prvku

ET,1,PLANE13 ! nastaveni axisymetrie
!*
KEYOPT,1,1,0
KEYOPT,1,2,0
KEYOPT,1,3,1
KEYOPT,1,4,0
KEYOPT,1,5,0
!*

! +++++++ nastevni materialu

MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,MURX,1,,1 ! hlinik
MPDATA,MURX,2,,800 ! ocel
MPDATA,MURX,3,,1 ! měd
MPDATA,MURX,4,,1 ! vzduch

! +++++++ prirazeni materialu

AESIZE,4,1 !nastaveni velikosti
AMESH,4

mat,2
AESIZE,9,1 !nastaveni velikosti
AMESH,9

AESIZE,1,1
AMESH,1

mat,3
AESIZE,5,1
AMESH,5

mat,4
AESIZE,12,1
AMESH,12

AESIZE,8,0.05
AMESH,8

AESIZE,10,1
AMESH,10

AESIZE,9,1
AMESH,9

AESIZE,11,1
AMESH,11

! +++++++ Current density

BFA,5,JS, , ,1000,0

! +++++++ mAGNETIC FLUX PARALEL

LPLOT
FLST,2,6,4,ORDE,5
FITEM,2,1
FITEM,2,34
FITEM,2,-36
FITEM,2,44
FITEM,2,-45
DL,P51X, ,ASYM

! +++++++ Solve

/SOL
MAGSOLV,0,3,0.001, ,25,

FINISH
/POST1
PLF2D,27,0,10,1

 

[benji216]

I had a similar problem to this one recently and found that by glueing the areas together after this line
AADD,2,6,3,7
the areas will then connect together and the magnetic flux lines will flow through out the whole design.